package com.xls.mypay.anim;

import android.graphics.Camera;
import android.graphics.Matrix;
import android.view.animation.Animation;
import android.view.animation.Transformation;

/**
 * Created by Administrator on 2017/7/18.
 */

public class Rotate3dAnimation extends Animation {
    private  float mFromDegrees;
    private  float mToDegrees;
    private  float mCenterX;
    private  float mCenterY;
    private  float mDepthZ;
    private  boolean mReverse;
    private Camera mCamera;

    public Rotate3dAnimation(float fromDegrees,float toDegrees,float centerX,float centerY,
                             float depthZ,boolean reverse){
        this.mFromDegrees = fromDegrees;
        this.mToDegrees =toDegrees;
        this.mCenterX = centerX;
        this.mCenterY = centerY;
        this.mDepthZ = depthZ;
        this.mReverse = reverse;
    }

    @Override
    public void initialize(int width, int height, int parentWidth, int parentHeight) {
        super.initialize(width, height, parentWidth, parentHeight);
        mCamera = new Camera();
    }


    @Override
    protected void applyTransformation(float interpolatedTime, Transformation t) {
        super.applyTransformation(interpolatedTime, t);
        final float fromDegrees = mFromDegrees;
        float degrees = fromDegrees + ((mToDegrees - fromDegrees) * interpolatedTime);

        final float centerX = mCenterX;
        final float centerY = mCenterY;
        final Camera camera = mCamera;

        final Matrix matrix = t.getMatrix();


        camera.save();
        if (mReverse) {
            camera.translate(0.0f, 0.0f, mDepthZ * interpolatedTime);
        } else {
            camera.translate(0.0f, 0.0f, mDepthZ * (1.0f - interpolatedTime));
        }
        camera.rotateY(degrees);
        camera.getMatrix(matrix);
        camera.restore();

        matrix.preTranslate(-centerX, -centerY);
        matrix.postTranslate(centerX, centerY);

    }
}
